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62460

Sigma-Aldrich

Lithium borohydride

≥95.0%

Sinónimos:

Lithium boron hydride, Lithium hydroborate

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$124.00
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$159.00

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$124.00
25 G
$159.00

About This Item

Fórmula lineal:
LiBH4
Número de CAS:
16949-15-8
Peso molecular:
21.78
Número CE:
241-021-7
Número MDL:
MFCD00011088
Código UNSPSC:
26111700
ID de la sustancia en PubChem:
57651885
NACRES:
NA.22

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Nivel de calidad

100

Ensayo

≥95.0%

Formulario

solid

idoneidad de la reacción

reagent type: reductant

mp

275 °C (dec.)

densidad

0.666 g/mL at 25 °C (lit.)

cadena SMILES

[Li+].[BH4-]

InChI

1S/BH4.Li/h1H4;/q-1;+1

Clave InChI

UUKMSDRCXNLYOO-UHFFFAOYSA-N

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Aplicación

Lithium borohydride is a general reducing agent commonly used to reduce aldehydes, ketones esters, lactones, and epoxides.[1][2][3] It catalyzes hydroboration of alkenes.[4] It is also used in the preparation of other borohydrides such as aluminum borohydride.[5]

Otras notas

Review[6]; Smooth reduction of esters[7][8]; Reduction of acids and other functional groups with LiBH4/Me3SiCl[9]

Palabra de señalización

Danger

Frases de peligro

H260,H301,H314

Clasificaciones de peligro

Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1B - Water-react 1

Código de clase de almacenamiento

4.3 - Hazardous materials which set free flammable gases upon contact with water

Clase de riesgo para el agua (WGK)

WGK 2

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificados de análisis (COA)

Lot/Batch Number
SHBS3093
SHBF3383V
MKBP9913V
STBF0750V
STBF0749V

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Lithium borohydride-catalyzed selective reduction of the carbonyl group of conjugated and unconjugated alkenones with borane in tetrahydrofuran.
Arase, Akira et al.
Journal of the Chemical Society. Chemical Communications, 51(7), 855-856 (1994)
Mixed solvents containing methanol as useful reaction media for unique chemoselective reductions within lithium borohydride.
Soai, Kenso and Ookawa, Atsuhiro
The Journal of Organic Chemistry, 51(21), 4000-4005 (1986)
The Preparation of Other Borohydrides by Metathetical Reactions Utilizing the Alkali Metal Borohydrides1.
Schlesinger, HI et al.
Journal of the American Chemical Society, 75(1), 209-213 (1953)
LiBH 4-promoted hydroboration of alkenes with 1, 3, 2-benzodioxaborole.
Arase, Akira et al.
Journal of the Chemical Society. Chemical Communications, 51(4), 205-206 (1991)
A. Giannis et al.
Angewandte Chemie (International Edition in English), 101, 220-220 (1989)
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Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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